Half to hugh frederick mclachlin



(No Model.)

W. HARVEY.

FEED ROLL FOR GANG SAWS. No. 358,550? I Patented Mar. 1, 1887.

" arm Fries,

\VILLIAM HARVEY, OF ARNPRIOR, ONTARIO, CANADA, ASSIGNOR OF ONE- HALF TOHUGH FREDERICK MOLAOHLIN, OF SAME PLACE.

FEED-ROLL FGR GANG-SAWS.

SPECIFICATION forming part of Letters Patent No. 358,550, dated March 1,1887.

Application filed January 18, 1886. Serial No. 188,820. (No model.)

To all whom, it may concern.-

Be it known that 1, WILLIAM HARVEY, of Arnprior, in the county ofRenfrew and Province of Ontario, in the Dominion of Canada,

have invented certain new and useful Improvements in Feed-Rolls forGang-Saws; and I do hereby declare that the following is a full, clear,and exact description of the same.

My'invention relates to'improvements in IO that class of rolls which areused in saw-mills to feed logs to gangsaws, and has for its object toafford a steadier feed than heretofore by preventing the logs frombacking at the stroke of the saws, and also to obviate stringing andchunking of the lumber.

My invention consists, briefly speaking, in providing the roller withencircling toothed rings, each in line with a saw and spaced ac cordingto the width of lumber and number of 23 boards to be sawed, and annulargage-collars slipped over the roll proper, and between each toothedring, and the whole being held firmly in place by end nuts screwed tothe roll.

For full comprehension of my invention 25 reference must be had to theaccompanying drawings,-forming part of this specification, in whichsimilar letters of reference indicate like parts, and where- Figure 1 isa sectional elevation of my improved feed-roll, Fig. 2 an end view, andFig.

3 a crossseetion of the same.

A is the roll proper, and a a its journals. Near each end this roll issimilarly threaded to receive right and left hand nuts B B, and

the body has a feather, a, formed on it for the remaining portion of itslength.

Over the roll A are slipped a number of rings, 0 0, (preferably ofsteel,) having their peripheries divided into sharp teeth 0, and

between these toothed rings I place gage-collars D D, (usuallyofcast-iron,) both the toothed rings and collars being suitably checkedto lit the feather a on the roll, as shown particularly in Fig. 3.

There will be one toothed ring for each saw in the gang before which theroller is placed,

, insured, substantially as set forth.

and the collars D D are of the same widlth as the lumber to be sawed.

The teeth of the rings 0 C out channels of their own depth in the log asit is fed toward the saws, and these channels are in the exact line ofthe saws. Therefore as thelatter descend the channeling or scoringalready made in the lower side of the log will prevent the saws fromtearing out portions of the wood, as they do where no channels exist.The same teeth also grip the log firmly and prevent it from backing awayfrom the saws, thus materially steadying the feed.

The nuts B B threaded upon the roll, allow 6c of thetoothed rings andgage-collars being adjusted and interchanged to suit the saws in thegang, besides serving to hold the different parts firmly together.

If desired, one or more rings and gage collars may be formed in one, andvarious modifications of my invention may be made without departing fromits essential features.

What I claim is 1. A feed-roll for gang'saws having circular rows ofteeth, such rows being so spaced as to be in line with the gangsaws,whereby channels are formed in the lumber in the lines of cutting and asmooth finish to each cut is 2. A feed-roll for gang-saws carryingannular toothed rings spaced on the roll so as to be in line with thegang-saws andgage-collars, substantially as and for the purposespecified.

3. The combination, with the roll threaded and feathered substantiallyas described, of the toothed rings 0 O, spaced on the roll so as to bein line with the gang-saws, gage collars D D, and nuts B 13,substantially as and for the purpose specified.

Signed at Arnprior, in the Province ofOntario, Canada, this 28th day ofDecember, 1885.

lVlLLlAM HARVEY. Vitnesses:

RICHARD DULllIAGE, RICHARD MAONAMARA.

